diff --git a/iOSProject/pyunrihae/pyunrihae/MainViewController.swift b/iOSProject/pyunrihae/pyunrihae/MainViewController.swift
index 07072b1f..3d209794 100644
--- a/iOSProject/pyunrihae/pyunrihae/MainViewController.swift
+++ b/iOSProject/pyunrihae/pyunrihae/MainViewController.swift
@@ -141,7 +141,7 @@ class MainViewController: UIViewController {
                 self.productList = []
                 for product in self.appdelegate.productList {
                     if product.category == categoryBtns[selectedCategoryIndex].titleLabel?.text!{
-                         self.productList.append(product)
+                        self.productList.append(product)
                     }
                 }
                 DispatchQueue.main.async {
@@ -177,6 +177,7 @@ class MainViewController: UIViewController {
     }
     // 리뷰의 스크롤 이미지를 가져오는 함수
     func setReviewScrollImages(){
+        
         var brand = ""
         switch selectedBrandIndexFromTab {
             case 0 : brand = "전체"
@@ -185,7 +186,6 @@ class MainViewController: UIViewController {
             case 3 : brand = "7-eleven"
             default : break
         }
-//        indicatorView.startAnimating()
         DataManager.getTop3ReviewByBrand(brand: brand) { (reviews) in
             self.reviewList = reviews
             if self.reviewScrollView != nil {
@@ -256,9 +256,15 @@ class MainViewController: UIViewController {
         }
     }
     func setProductScrollView(){
+        
+        // 기존에 붙어있던 subview를 제거
         for subview in self.productScrollView.subviews {
             subview.removeFromSuperview()
         }
+        
+        // 스크롤을 맨 앞으로 다시 가져온다.
+        self.productScrollView.contentOffset.x = 0
+        
         if self.productScrollView != nil {
             let imageViewWidth = self.productScrollView.frame.size.width;
             let imageViewHeight = self.productScrollView.frame.size.height;
diff --git a/iOSProject/pyunrihae/pyunrihae/Pyunrihae.swift b/iOSProject/pyunrihae/pyunrihae/Pyunrihae.swift
index 730d5688..1c909544 100644
--- a/iOSProject/pyunrihae/pyunrihae/Pyunrihae.swift
+++ b/iOSProject/pyunrihae/pyunrihae/Pyunrihae.swift
@@ -6,12 +6,20 @@
 //  Copyright © 2017년 busride. All rights reserved.
 //
 
+/*
+ *  편리해 앱에서
+ *  반복적으로 사용되는 함수들을 모아놓은 model입니다.
+ */
+
 import Foundation
 
 
 class Pyunrihae {
     
     
+    /*
+     *  비회원일 때 로그인 필요 기능에 팝업 띄우기
+     */
     static func showLoginOptionPopup(_ controller : UIViewController){
         let alertController = UIAlertController(title: "알림", message: "로그인 뒤 이용가능합니다.", preferredStyle: UIAlertControllerStyle.alert)
         let DestructiveAction = UIAlertAction(title: "취소", style: UIAlertActionStyle.destructive) { (result : UIAlertAction) -> Void in